A object of mass 3.00 kg is subject to a force F, that varies with position as in the figure below. Fx (N) 3 2 x (m) 2 4 6 8 10 12 14 16 18 20 (a) Find the work done by the force on the object as it moves from x = 0 to x = 5.00 m. (b) Find the work done by the force on the object as it moves from x = 5.00 m to x = 10.0 m. (c) Find the work done by the force on the object as it moves from x = 10.0 m to x 17.0 m. 4,

a block of mass m=5 kg is pulled at a constant speed along a rough horizontal surface by a rope at 30 degree. the tension in the rope is T and the coefficient of kinetic friction between the block and the surface is 0.25. (a) find the tension in the rope. (b) if the block travels a distance of 4.5 m along the surface, what is the work done by the tension force from the rope? (c) find the work done by friction on the rock.

The graph shows the x component of a force that acts on an object that moves on the x axis. The vertical spacing between adjacent grid lines is 4.98N, while the horizontal spacing between adjacent grid lines is 1.0m. What is the work, in joules, done by the force as the object moves from x = 4m to x = 5m ? F (N) C C 0 x (m)

A particle is subject to a force F, that varies with position as shown in the following figure. F, (N) 3 1 х (m) 4 6 10 12 14 16 (a) Find the work done by the force on the particle as it moves from x = 0 to x = :3.00 m. (b) Find the work done by the force on the particle as it moves from x = 5.00 m to x = 9.00 m. J (c) Find the work done by the force on the particle as it moves from x = 11.0 m to x = 15.0 m. (d) What is the total work done by the force over the distance x = 0 to X = 15.0 m?

Consider an object of mass m = 4 kg on a frictionless table. The object experiences a repulsive force F = a/x2 + b/x, where F is in newtons and x is the position of the object relative to the origin. Write an expression for the work done by the repulsive force on the object as it moves from an initial position of x1 to a final position of x2.    If the object starts at a position of x1 = 8.5 m apart, how much work, in joules, is required by an external force to bring it to a position of x2 = 2.5 m apart when a = 19 and b = 11?    If the object starts at rest at a position x3 = 1.3 m and is released, at what speed v, in meters per second, will the object be moving when it is at position x4 = 12.5 m?

A force F (x) = (10 − 2x) N applied in the positive x-direction moves an object 3 m from x = 2 to x = 5. The work done by the force on the object is ____. 4 joules 9 Joules 6 Joules 21 joules

A spring with a spring constant of 18.0 N/cm has a cage attached to its free end. (a) How much work does the spring force do on the cage when the spring is stretched from its relaxed length by 7.60 mm? (b) How much additional work is done by the spring force when the spring is stretched by an additional 7.60 mm?

A force of 45.6 lb is used to push a box 10.3 ft across a level floor. (a) How much work was done on the box? (b) What is the change of potential energy as a result of this move? (a) W = x 102 ft·lb %3D (b) PE = ft lb %3D

The force acting on a particle varies as in the figure below. (The x axis is marked in increments of 0.250 m.) Find the work done by the force as the particle moves across the following distances. (a) from x = 0 m tox = 2.00 m(b) from x = 2.00 m to x = 3.00 m(c) from x = 0 m to x = 3.00 m

The force F(x) varies with position, as shown below. Find the work done by this force on a particle as it moves from x = 1.0 m to x = 5.0 m. F(x) (N) 4 6.0 4.0 2.0 0 -2.0 -4.0 2.0 4.0 6.0 8.0 x(m)